Investing in Commodities in Australia: Gold, Oil, and Beyond

Commodities - physical goods like gold, oil, agricultural products, and metals - behave differently from shares and bonds in important ways. Understanding when and why they add value to a portfolio matters before allocating any capital.

• Low correlation to equities: commodities often perform differently to share markets - gold in particular tends to hold value or rise during equity market stress events, providing a partial cushion
• Inflation hedging: commodities are priced in real terms and often appreciate during inflationary periods; gold and energy have historically maintained purchasing power over long periods
• No income: most commodities pay no dividends or distributions - total return comes entirely from price appreciation; this makes commodities unsuitable as a primary portfolio holding but useful as a diversifying satellite
• High volatility: individual commodity prices are extremely volatile - oil fell below zero briefly in April 2020; gold fell 40% from its 2011 peak to its 2015 trough; diversification within commodities is important
• Typical portfolio allocation: most financial planners suggest 0–5% in commodities, with gold specifically 2–5% for those who want an inflation and stress hedge; above 10% is generally excessive for a balanced portfolio
• Currency exposure: commodities are priced globally in US dollars; Australian investors in unhedged commodity ETFs gain exposure to both the commodity price and the AUD/USD exchange rate - when the AUD falls, commodity ETFs rise in AUD terms even if commodity prices are flat

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Gold is the most accessible commodity for Australian retail investors and can be held through multiple structures on the ASX. The structure determines cost, currency risk, and tax treatment.

• Perth Mint Physical Gold ETF (ASX: GOLD): physically backed by gold bullion stored at the Perth Mint in Western Australia; AUD-hedged (the currency exposure is hedged, so returns track the gold price in AUD without AUD/USD movement); MER 0.15% - one of the lowest-cost gold ETFs available to Australian investors
• BetaShares Gold Bullion ETF (ASX: QAU): also physically backed by gold bullion; AUD-hedged; MER 0.59% - higher cost than GOLD for the same hedged gold exposure
• Unhedged gold exposure: investors who want exposure to gold price movements plus AUD/USD currency movements can access unhedged gold ETFs listed overseas (GLD, IAU) through international broker platforms; in AUD terms, unhedged gold rises when the AUD falls - adding a natural portfolio hedge since Australian equities typically fall when AUD falls
• Physical gold directly: the Perth Mint also sells physical gold coins and bars (guaranteed by the Western Australian government) for investors who want direct ownership; storage, insurance, and security costs apply
• Gold mining shares: ASX-listed gold producers (Newmont, Northern Star, Evolution Mining) provide leveraged exposure to the gold price - miners have operating leverage meaning a 10% rise in gold price can drive a 20–30% rise in miner profitability; higher risk than physical gold
• Tax on gold ETFs: long-term holding (12+ months) of physically backed gold ETFs qualifies for the 50% CGT discount on any capital gain at sale - unlike futures-based commodity products where each contract roll creates a CGT event inside the fund

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For commodities other than gold, Australian retail investors often need to use futures-based ETFs - which have a structural cost that significantly erodes returns over time.

• BetaShares Crude Oil ETF (ASX: OOO): provides exposure to West Texas Intermediate (WTI) crude oil via futures contracts; as the front-month futures contract approaches expiry, the fund rolls to the next month - creating a roll cost when markets are in contango
• Contango: when futures prices are higher than spot prices (the normal state for oil and many commodities), rolling expiring contracts to new contracts involves selling the cheaper near-month and buying the more expensive far-month - this contango drag erodes returns significantly over time
• Contango cost example: if crude oil trades in a consistent contango of 2% per month, the futures-based ETF loses approximately 24% per year in roll costs even if the spot price of oil is flat - futures-based commodity ETFs are tools for short-term tactical exposure, not long-term holds
• Backwardation: the opposite of contango - when futures prices are below spot prices (common during supply shocks), rolling gains a positive return; oil markets can flip between contango and backwardation based on supply/demand dynamics
• Energy sector shares as oil proxy: for long-term energy exposure, owning shares in oil and gas producers (Santos, Woodside on the ASX) provides revenue tied to energy prices without the roll cost problem; these are equities with their own company-specific risks
• Agricultural commodities: there are limited ASX-listed agricultural commodity ETFs available to Australian retail investors; exposure typically requires an international broker account or investment in agricultural company shares (Elders, Graincorp)

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Beyond gold and oil, Australian investors can access industrial metals, broad commodity baskets, and diversified real asset strategies - each with different risk profiles.

• Industrial metals (copper, nickel, lithium): directly relevant to the clean energy transition; Australian investors can gain exposure through mining company shares listed on the ASX (BHP, Rio Tinto for diversified metals; Pilbara Minerals, Liontown for lithium)
• Broad commodity basket ETFs: international ETFs tracking indices like the Bloomberg Commodity Index or S&P GSCI provide diversified commodity exposure across energy, metals, and agriculture - typically futures-based with roll costs that compound over time
• Diversified real assets: some managed funds and ETFs combine listed infrastructure, REITs, and commodities in a single real assets portfolio - spreading exposure across multiple inflation-linked asset classes rather than concentrating in one
• Lithium and battery metals: highly speculative given the binary nature of many lithium exploration and development companies; the commodity price fell over 90% from its 2022 peak - consider broad ETF exposure rather than individual miners
• ASX resources exposure through VAS: Australian investors holding VAS (Vanguard Australian Shares Index ETF) already have significant commodity exposure through BHP, Rio Tinto, Woodside, and other resources companies that comprise 20–25% of the ASX 200 by weight
• Currency as a de facto commodity hedge: the Australian dollar has a strong positive correlation with commodity prices (particularly iron ore and copper) due to Australia's resource export economy; AUD appreciation during commodity booms means Australian investors are partially hedged naturally without needing direct commodity exposure

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The tax treatment of commodity investments varies by structure and holding period. Understanding this before buying avoids unexpected outcomes at tax time.

• Physically backed gold ETFs (GOLD, QAU): CGT applies on sale; 50% CGT discount available for holdings of more than 12 months - same treatment as shares
• Futures-based commodity ETFs (OOO and similar): the fund rolls contracts internally and distributes any realised gains or losses annually; investors may receive CGT distributions even without selling their ETF units
• No dividend franking credits: commodity investments generate no franking credits - they are not Australian companies paying dividends from taxed profits; total return is pure price movement
• No income distributions: most pure commodity ETFs distribute nothing during the year; the only taxable event is when you sell (CGT) or receive a capital gain distribution from a futures-rolling fund
• Holding inside super: gold and commodity ETFs held inside super are taxed at 15% on any capital gain (or 10% with the 12-month discount) - lower than most investors' personal CGT rate; particularly advantageous for those in the 37–45% tax bracket
• Cost base in foreign currency: if you purchase overseas commodity ETFs through an international broker, the cost base must be converted to AUD at the RBA exchange rate on purchase date, and the sale proceeds at the rate on sale date - the AUD/USD movement creates a CGT outcome independent of the commodity price movement

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Commodities can play a meaningful role in a diversified portfolio - but contango drag, currency effects, and tax treatment make the practical outcomes very different from the headline exposure.

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